<template>
  <div>
    <div class="shopcart">
      <div class="content">
      <!-- @click="toggleShow" -->
        <div class="content-left"  @click="toggleShow" >
          <div class="logo-wrapper">
            <!-- :class="{highlight: totalCount}" -->
            <div class="logo" :class="{highlight: totalCount}" >
              <!-- :class="{highlight: totalCount}" -->
              <i class="iconfont icon-shopping_cart"  :class="{highlight: totalCount}" ></i>
            </div>
            <!-- v-if="totalCount"  {{totalCount}} -->
            <div class="num" v-if="totalCount"  >{{totalCount}}</div>
          </div>

          <!-- :class="{highlight: totalCount}" {{totalPrice}} -->
          <div class="price" :class="{highlight: totalCount}" >￥{{totalPrice}}</div>
          <!-- {{info.deliveryPrice}} -->
          <div class="desc">另需配送费￥ {{info.deliveryPrice}}元</div>
        </div>
        <div class="content-right">
          <!-- :class="payClass" -->
          <div class="pay" :class="payClass">
            {{payText}}
          </div>
        </div>
      </div>
      <transition name="move">
        <!-- v-show="listShow" -->
        <div class="shopcart-list"  v-show="listShow" >
          <div class="list-header">
            <h1 class="title">购物车</h1>
            <!-- @click="clearCart" -->
            <span class="empty" @click="clearCart">清空</span>
          </div>
          <div class="list-content">
            <ul>
               <!-- v-for="(food, index) in cartFoods" :key="index" -->
              <li class="food"  v-for="(food, index) in cartFoods" :key="index"  >
                <!-- {{food.name}} -->
                <span class="name"> {{food.name}}  </span>
                <!-- {{food.price}} -->
                <div class="price"><span>￥{{food.price*food.count}}  </span></div>
                <div class="cartcontrol-wrapper">
                  <!-- :food="food" -->
                  <CartControl :food="food" />
                </div>
              </li>
            </ul>
          </div>
        </div>
      </transition>

    </div>
    <!-- @click="toggleShow" v-show="listShow"-->
    <div class="list-mask"  @click="toggleShow"   v-show="listShow"></div>
  </div>
</template>

<script>
import CartControl from '../CartControl/CartControl.vue'
import {mapGetters,mapState} from 'vuex'
import {MessageBox} from 'mint-ui'
import  BetterScroll from 'better-scroll'
export default {
  name:'',
  data(){
    return{
      isShow:true,

    }
  },

  computed:{
    ...mapState(['cartFoods','info']),
    ...mapGetters(['totalCount','totalPrice']),
    //创建最低起送费动态数据
    payText(){
      // 映射获取
      let {info,totalPrice,totalCount}=this;
      // 判断起送费用差值
      if(totalCount==0){
        return `${info.minPrice}元起送`
      }else if(totalPrice<info.minPrice){
        return `还差${info.minPrice-totalPrice}元起送`
      }else{
        return `支付${totalPrice}元`
      }
    },
    //支付按钮模块
    payClass(){
      let {info,totalPrice,totalCount}=this;
      return totalPrice>info.minPrice?'enough':'not-enough'
    },
    //遮层罩隐藏与显示
    listShow(){
      let {totalCount}=this;
      if(totalCount==0){
        return false;
      }
      return this.isShow

    }


  },
  methods:{

    toggleShow(){
      //点击遮层罩隐藏购物车列表
      this.isShow=!this.isShow;

      //给购物车列表加滚动效果
      //单列模式  下一个dom渲染之前添加
      this.$nextTick(()=>{
        if(!this.scrollCart){  //如果没有就创建一个新的
          this.scrollCart=new BetterScroll('.list-content',{
                probeType:3,
               click:true
          })
        }else{

          //refresh()刷新
            this.scrollCart.refresh()  //只创建一次  如果有了就不要在创建了
        }
      })



    },
    //清空购物车函数
    clearCart(){
      MessageBox.confirm('确定要清空购物车吗?').then(res=>{
        // 利用$tore.dispatch()获取mutations里的clear_cart()函数
          this.$store.dispatch('clearCart')
      }).catch(err=>{})


    }
  },
  components:{
     CartControl,
  },
}

</script>

<style lang="stylus" rel="stylesheet/stylus" scoped>
  @import "../../common/stylus/mixins.styl"

  .shopcart
    position fixed
    left 0
    bottom 0
    z-index 50
    width 100%
    height 48px
    .content
      display flex
      background #141d27
      font-size 0
      color rgba(255, 255, 255, 0.4)
      .content-left
        flex 1
        .logo-wrapper
          display inline-block
          vertical-align top
          position relative
          top -10px
          margin 0 12px
          padding 6px
          width 56px
          height 56px
          box-sizing border-box
          border-radius 50%
          background #141d27
          .logo
            width 100%
            height 100%
            border-radius 50%
            text-align center
            background #2b343c
            &.highlight
              background $green
            .icon-shopping_cart
              line-height 44px
              font-size 24px
              color #80858a
              &.highlight
                color #fff
          .num
            position absolute
            top 0
            right 0
            width 24px
            height 16px
            line-height 16px
            text-align center
            border-radius 16px
            font-size 9px
            font-weight 700
            color #ffffff
            background rgb(240, 20, 20)
            box-shadow 0 4px 8px 0 rgba(0, 0, 0, 0.4)
        .price
          display inline-block
          vertical-align top
          margin-top 5px
          line-height 24px
          padding-right 12px
          box-sizing border-box
          font-size 16px
          font-weight 700
          color #fff
          &.highlight
            color #fff
        .desc
          display inline-block
          vertical-align bottom
          margin-bottom 15px
          margin-left -45px
          font-size 10px
      .content-right
        flex 0 0 105px
        width 105px
        .pay
          height 48px
          line-height 48px
          text-align center
          font-size 12px
          font-weight 700
          color #fff
          &.not-enough
            background #2b333b
          &.enough
            background red
            color #fff
    .ball-container
      .ball
        position fixed
        left 32px
        bottom 22px
        z-index 200
        transition all 0.4s cubic-bezier(0.49, -0.29, 0.75, 0.41)
        .inner
          width 16px
          height 16px
          border-radius 50%
          background $green
          transition all 0.4s linear
    .shopcart-list
      position absolute
      left 0
      top 0
      z-index -1
      width 100%
      transform translateY(-100%)
      &.move-enter-active, &.move-leave-active
        transition transform .3s
      &.move-enter, &.move-leave-to
        transform translateY(0)
      .list-header
        height 40px
        line-height 40px
        padding 0 18px
        background #f3f5f7
        border-bottom 1px solid rgba(7, 17, 27, 0.1)
        .title
          float left
          font-size 14px
          color rgb(7, 17, 27)
        .empty
          float right
          font-size 12px
          color #02a774

      .list-content
        padding 0 18px
        max-height 217px
        overflow hidden
        background #fff
        .food
          position relative
          padding 12px 0
          box-sizing border-box
          bottom-border-1px(rgba(7, 17, 27, 0.1))
          .name
            line-height 24px
            font-size 14px
            color rgb(7, 17, 27)
          .price
            position absolute
            right 90px
            bottom 12px
            line-height 24px
            font-size 14px
            font-weight 700
            color rgb(240, 20, 20)
          .cartcontrol-wrapper
            position absolute
            right 0
            bottom 6px

  .list-mask
    position fixed
    top 0
    left 0
    width 100%
    height 100%
    z-index 40
    backdrop-filter blur(10px)
    opacity 1
    background rgba(7, 17, 27, 0.6)
    &.fade-enter-active, &.fade-leave-active
      transition all 0.5s
    &.fade-enter, &.fade-leave-to
      opacity 0
      background rgba(7, 17, 27, 0)
</style>
